EP1187729A1 - Gerät, insbesondere schreibgerät - Google Patents
Gerät, insbesondere schreibgerätInfo
- Publication number
- EP1187729A1 EP1187729A1 EP00945736A EP00945736A EP1187729A1 EP 1187729 A1 EP1187729 A1 EP 1187729A1 EP 00945736 A EP00945736 A EP 00945736A EP 00945736 A EP00945736 A EP 00945736A EP 1187729 A1 EP1187729 A1 EP 1187729A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- capillary
- conductor
- capillarity
- reservoir
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
- B43K5/18—Arrangements for feeding the ink to the nibs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K8/00—Pens with writing-points other than nibs or balls
- B43K8/003—Pen barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K8/00—Pens with writing-points other than nibs or balls
- B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K8/00—Pens with writing-points other than nibs or balls
- B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
- B43K8/04—Arrangements for feeding ink to writing-points
- B43K8/06—Wick feed from within reservoir to writing-points
- B43K8/08—Wick separate from writing-points
Definitions
- the invention relates to a device, in particular a writing instrument, according to the preamble of claim 1.
- the distribution of the capillaries or their uniformity over the entire length during the manufacture of the wick is difficult to set, so that the writing properties of different devices differ from one another.
- the capillaries are evenly distributed, especially if wicks with small diameters are used, the ink flow is limited, since all capillaries of the liquid conductor, the capillarity of which does not differ significantly from that of the air inlet capillary, do not contribute to the ink flow.
- the object of the invention is to further develop a generic device in such a way that it allows a large flow of liquid through the liquid conduit with inexpensive manufacture and also with a small diameter.
- the capillary air inlet is not formed according to the invention by the largest capillaries of the liquid conductor, but by capillary material of the partition itself, the properties of the air inlet can be determined largely independently of those of the capillary liquid conductor if only the specified relationships between the capillarities are maintained - the. If the entire partition consists of capillary material, it is particularly easy to manufacture.
- the claim 2 characterizes a particularly easy to manufacture embodiment, since medium capillarities can be determined in the manufacturing process of the respective materials.
- the claim 3 characterizes a simple basic construction of the device.
- the claim 4 is directed to an embodiment of the device such that, as is known per se, the liquid conductor, which is preferably in the form of a wick, is guided through the partition wall to the liquid supply.
- the embodiment according to claim 5 is simplified in terms of production technology, since the formation of a hole in the partition is not necessary.
- the advantage is achieved that the manufacture and assembly of the two functional parts wick and memory are each standardized, since both functional parts are combined into one component.
- the device according to the invention can be used according to claims 7 and 8 not only as a writing device or applicator for other liquid media, but also as a supply device for a printhead, as used for example in an inkjet printer.
- FIG. 1 shows a cross section through a device according to the invention
- FIG. 2 curves for explaining the capillary properties of the various functional parts
- FIG. 3 a view similar to FIG. 1 of a modified embodiment of a device and FIG. 4 a further embodiment of the device.
- a writing instrument has an overall cylindrical housing 2, the interior of which is divided by a partition 4 into a liquid chamber 6 and a further chamber 8. At its left end according to FIG. 1, the housing 2 tapers conically and ends in a cylindrical extension 10.
- An application element 12 is accommodated in a through opening of the cylindrical extension 10 and is formed, for example, by a writing tip, a drawing tip or a brush.
- the partition 4 has a through-opening 14 which is completely filled by a capillary liquid conductor 16 designed as a wick, which extends as far as the application element 12 and supplies liquid from the liquid chamber 6.
- a capillary reservoir 18 is accommodated in the chamber 8, which is designed, for example, as a cylinder with a through-channel 20 through which the liquid conductor 16 leads.
- the dimensioning is such that the material of the liquid conductor 16 is at least in partial areas in direct contact with the material of the reservoir 18.
- the capillary memory can be held mechanically within the chamber 8 via approaches, not shown.
- an air duct 22 leads through the extension 10.
- the capillary storage 18 is designed such that the air can flow past it through the chamber 8 to the partition 4, which consists of capillary material.
- FIG. 2 shows three curves A, B and C, which indicate the percentage distribution of the capillarities for the liquid conductor 16 (curve A), the material of the partition 4 (curve B) and the capillary reservoir (curve C).
- the capillarity increases, i.e. the rise up to which a liquid penetrates the respective capillary increases.
- the height of rise is determined both by the dimensioning, i.e. especially given the diameter of the capillaries, as well as by the adhesion between the liquid and the material.
- Point I indicates the smallest capillarity of the capillary material of the partition 4 and point II indicates the smallest capillarity of the material of the liquid conductor 16. With the same materials, the capillarity decreases with increasing diameter of the capillaries.
- the smallest capillarity I of the partition 4 which forms part of the ventilation path, is greater than the capillarity of the predominant part of the capillary reservoir 18 (curve C). Otherwise the accumulator would be soaked up with liquid. It is also important that the smallest capillarity I is smaller than the smallest capillarity of the liquid conductor 16; otherwise the area of the liquid conductor with the smallest capillarity would serve as an air inlet.
- the average capillarity of the liquid conductor in the case of a symmetrical distribution, approximately the apex of curve A
- that of the partition apex of curve B
- the average capillarity of the capillary reservoir 18 (Curve C).
- the fact that the liquid does not run downwards from the vertically held writing instrument lies in the fact that a negative pressure is created in the liquid chamber 6, the size of which is determined by the capillarity of the capillaries of the dividing wall 4 and which, if properly coordinated, must be such that it weighs withstands the liquid column from the upper level of the liquid in the liquid chamber 6 to the lower end of the application element 12.
- the capillaries with large capillarity of the partition 4 are filled with liquid.
- the capillary memory 18 thus remains at least largely empty.
- the negative pressure in the liquid chamber 6 drops, as a result of which the capillaries of the capillary memory 18 fill with liquid to the extent that they are able to counteract the decreasing negative pressure in the liquid chamber 6 due to the capillary forces.
- the negative pressure in the liquid chamber 6 increases again, so that the process comes to a standstill without liquid escaping from the application element 12. If the temperature increases again or the ambient pressure increases, the process is reversed; the rising negative pressure in the liquid chamber 6 sucks the capillary liquid reservoir 18 empty.
- the partition 4 does not have to consist entirely of capillary material, but can, for example, only consist of capillary material in an area passing through it.
- the capillaries in the partition 4 as well as in the capillary liquid storage do not necessarily have to be formed by the fact that the material as a whole is porous or capillary; they can also be formed by defined slots which in the case of the partition 4 extend from the chamber 8 into the chamber 6 through the partition or in the case of the capillary reservoir 18 are in direct contact with the capillaries of the liquid conductor 16.
- the ventilation path does not necessarily have to lead through the chamber 8 and the partition 4. It can also be formed by a region made of capillary material in another wall region of the chamber 6.
- the hole 14 which is completely filled by the liquid conductor 16 does not necessarily have to be formed in the partition 4.
- the invention achieves simple manufacture of the writing instrument in a well-defined quality by the material of the liquid conductor 16, the writing security (full suction due to sufficiently high capillarity and sufficiently low forward resistance) regardless of the material of the partition 4, which is a determining factor in the writing speed and can be selected independently of the material of the capillary memory 18, which guarantees security against leakage in the event of pressure fluctuations.
- the materials can be selected in such a way that there are very sharp distribution functions which lead to the three curves A, B, C not overlapping. Functional reliability is guaranteed even with small diameter, easy-to-use writing instruments.
- FIG. 3 shows an embodiment of the device with a very large-volume liquid chamber 6 and an application element 24, such as is used in an ink jet printer, for example, as a print head which is formed with nozzles at the front and is controlled via electrical lines 26.
- the liquid conductor 16 leads directly into the application element 24. Otherwise, the function of the device of FIG. 3 corresponds to FIG. 1.
- the same reference numerals designate functionally identical components.
- FIG. 4 shows a further, modified embodiment of a writing instrument.
- the same components are designated with the same reference numerals for the above-described embodiments.
- the partition 25 is designed without a through opening and that the liquid conductor and the capillary reservoir are combined to form an integral component 26 which is directly attached to its rear side the capillary material of the partition 25 is applied and with the front of which the application element 12 is connected.
- the component 26 made of capillary material is fitted into the housing 2 such that it securely abuts the partition 25, with at least one air duct 28 remaining free along the outer circumference of the component 26, which can be extended in a section 30 which runs parallel to the surface of the partition 25.
- the capillarities of the material of the partition wall 25 and of the component 26 are chosen in accordance with those of FIG. 2 with regard to the functions performed by the aforementioned parts, that is to say the partition wall 25 comprises both capillaries which correspond to the liquid conductor (curve A) and Capillaries that correspond to the air inlet (curve B).
- the partition wall 25 comprises both capillaries which correspond to the liquid conductor (curve A) and Capillaries that correspond to the air inlet (curve B).
- the component comprises 26 capillaries according to curve C (reservoir) and curve A (liquid conductor). It goes without saying that curve C can overlap curve A here.
- capillaries which correspond to curve A i. H. Capillaries with high capillarity, which form the liquid conductor.
- the capillaries with a large capillarity of the component 26 soak up liquid through the capillaries with a large capillarity of the partition wall 25 and form the liquid conductor which connects the application element 12 to the liquid supply.
- the section 30 of the air duct 28 borders on regions of the partition wall 25, the smallest capillarity of which lies in the region of the curve B, i. H. that form the air inlet capillaries.
- the material of the component 26 has a distribution of the capillaries, which covers the curves C and B (FIG. 2) or corresponds to their union, and that the material of the partition wall 25 has a distribution of the capillarities that overlap - The curve A and B or their union corresponds.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pens And Brushes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19926488 | 1999-06-10 | ||
DE19926488A DE19926488B4 (de) | 1999-06-10 | 1999-06-10 | Gerät, insbesondere Schreibgerät |
PCT/EP2000/005361 WO2000076782A1 (de) | 1999-06-10 | 2000-06-09 | Gerät, insbesondere schreibgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1187729A1 true EP1187729A1 (de) | 2002-03-20 |
EP1187729B1 EP1187729B1 (de) | 2004-12-08 |
Family
ID=7910804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00945736A Expired - Lifetime EP1187729B1 (de) | 1999-06-10 | 2000-06-09 | Gerät, insbesondere schreibgerät |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1187729B1 (de) |
AU (1) | AU5972000A (de) |
DE (2) | DE19926488B4 (de) |
WO (1) | WO2000076782A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112361669B (zh) * | 2020-11-26 | 2023-07-28 | 珠海格力电器股份有限公司 | 多联机系统及其控制方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1209093A (en) * | 1982-03-16 | 1986-08-05 | Thomas D. Hall | Writing instruments and their manufacture |
EP0210469A3 (de) * | 1985-08-02 | 1987-08-19 | Montblanc-Simplo GmbH | Tintenschreiber |
CA2011485A1 (en) * | 1989-06-29 | 1990-12-29 | Dustin E. Dunn | Hydrophobic venting of free liquid ink reservoir pen |
DE4115685C3 (de) * | 1991-05-14 | 2001-07-05 | Dataprint Datendrucksysteme R | Schreibgerät mit in einem Behälter frei aufgenommener Schreibflüssigkeit |
DE19529865C2 (de) * | 1995-08-14 | 2002-02-28 | Kaufmann R Dataprint | Gerät zum Auftragen von Flüssigkeiten auf eine Unterlage mittels eines Auftragselements |
CA2246422A1 (en) * | 1997-08-29 | 1999-02-28 | The Pilot Ink Co., Ltd. | Direct liquid supply writing implement |
-
1999
- 1999-06-10 DE DE19926488A patent/DE19926488B4/de not_active Expired - Lifetime
-
2000
- 2000-06-09 WO PCT/EP2000/005361 patent/WO2000076782A1/de active IP Right Grant
- 2000-06-09 AU AU59720/00A patent/AU5972000A/en not_active Abandoned
- 2000-06-09 DE DE2000508909 patent/DE50008909D1/de not_active Expired - Lifetime
- 2000-06-09 EP EP00945736A patent/EP1187729B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0076782A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1187729B1 (de) | 2004-12-08 |
WO2000076782A1 (de) | 2000-12-21 |
AU5972000A (en) | 2001-01-02 |
DE19926488B4 (de) | 2004-05-27 |
DE50008909D1 (de) | 2005-01-13 |
DE19926488A1 (de) | 2000-12-21 |
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